Improved crimping-machotb



are f arpa.

jwLLrAllr- Bu'rrnurintn, or BOSTON,A

MASSACHUSETTS, ASSIGNOR TO HIM- SELF AND THOMAS ELWOOD ROBERTS, 0F SAME PLAGE.

Letters Patent No. 100,498, dated March 8, 1870.

IMPRVED CRIMPING-MCHINE.

The Schedule referred 4to in these Letters Patent and making part of the same.

To all persons torwh'om these presents may come.' i Be it known that I, WILLIAM BUTTERFIELD, of Boston, of the county of Suffolk, and State of Massachusetts, have made Va new anduseful invention having reference to Machinery' for Crimping Leather for the Upper of Boots or Shoes, or for'other pur-A poses; and. do hereby declare the same to be fully described in the following specification and represent-ed in the accompanying drawings, of which-V 4 Figure l is a side elevation.

`}S`\igure 2, atop view. Figure 3, a transverse section of a crimping-machine, embodying my invention, the said transverse through it transversely.

section being taken diametrically through Aits jaws on oppositesides of the axis of the machine.

Figure- 4 is a side elevation of the rotary crimpingwlieel or erimper. i

Figure 5 is an inner side view of one of the side plates and its series of jaws.

In the machine hereafter explained there are employed a l'otal'ywheel or orimper, and two or more sets of crimping-jaws, the latter being arranged around the common axis of the crimper and the side plates used for supporting the jaws, the same being so' that the piece of leather or article while being crimped may be passed in succession through the sets of jaws.

A denotes the crimping-wheel or orimper, it consisting, as represented, of a circular disk, It, provided with gear-teeth a on and around its periphery.

It also has one ormore angular slots, b, `formed This crimper is to revolve between two stationary 'frames or circular plates, B B, which serve to support the journal or shaft C of the orimper, and. also two or more setsof crimping-jaws, D D, arranged in a circular path about the axis of the shaft 0.

The jaws of each set aredisp'osed on opposite sides of' the orimper, that is, one is on-one side and the other on -the other side of it, and each jaw is to be forced toward the crimper by a sprimg, m,arranged in a socket, n, a'nd provided with a contractile screw, c, .the whole being substantially as represented in the drawings.

The several jaws of each series disposed in a circle are made as sectors of circles, with their edges resting in contact, as Shown in the drawings. This construction and arrangement of them cause each of them to be supported by all the rest when it is subjected to thesgreat strain to which it is liable while a piece ot' leather is being forced across the jaw bythe crimping-wheel.

The jaws ofthe series on each side ofthe crimpingwheel, though insulated from each other so as to act independently in lateral directions, that is, so as to move either toward or away from the crimping-wheel,"

yet contribute to support one another, as set forth. Besides allowing to each of the jaws greater freedom of movementto accommodate itself to the leather, the arrangement r'eqniresbut few fastenings 'to the jaws to hold them in their proper positions between the side plates.

The side plates B B close the machine on'the sides so as to exclude dust and dirt from collecting on the jaws, and theyalso operate to afford a strong support to the jaws and the wheel andthe springs ofthe'jaws:

There is also au angular slot or opening, d, made through each of the side plates B B, suc-h slot being formed and arranged in manner as shown in g. 1.

The two slots d are to be in conjunction, so as to constitute a common passage through the two plates, the same being to enable an attendant to pass a piece of leather laterally through the two slots and that of the orimper, and arrange it so that the orimper, while in revolution, may strike the piece of leather Vat or near its middle, in order to force it between the jaws of the first p'air, and thence insuccession betweenthose of the other sets of jaws. ,f

The side plates are supported in position by standards e e erected on bed-plates ff.

Furthermore, a pinion, g, fixed upon a shaft, h, engages with the teeth of the orimper, and when revolved t serves to put the crimper in revolution.

The orimper,!nay be without the gear-teeth and driving-pinion applied, as set forth, and may be revolved by power applied directly to its shaft when fixed to the orimper, but it is believed that it can be worked to much better advantage by the gear-teeth and pinion arranged as set forth. Y

In operating with this rotary crimping-machine, an attendant, when the. slotsof the crimper and side .plates come into or may be in conjunction, -has only to pass a boot-upper into them so that its middle may l be in the slot ofthe crimper. This having been done,

the crimper is to he put in revolution so as to crowd the leather between the jaws of the first, and in succession between those of every other pair ofthe series of sets, until finally the leather may have been carried into the passage through the machine sc as to enable it to be removed from the crimper.

Just preparatory to or after such removal another or fresh piece of leather may be introduced into the machine for the purposeof being crimped.

The machine may have more than one lateral passage through its side plates and orimper, or there may be a series of the slots or openings through the crimper to operate with one common passage through the two side plates, 'and with a series of sets of jaws arranged as hereiubeioredescribed..

I make no claim to the leather crimping-machine one another, and being so insulated from each other as patented by John E. Tucker, August 22, 1848. as to be capable of moving or being moved toward or What I claim is away from the wheel, as 'circumstances may require, My improved rotary crimping-machine, constructed dining the'process of crimping a piece of leather' bewith the jaws D of each series formed and arranged tween such jaw and wheel.

relatively to each other in manner and to operate WILLIAM BUTTERFIELD. with the slotted crimping-wheel and the side plates vWitnesses: or disks, (provided with springs,) as set forth, the sev- R. H. EDDY,

eral jaws, under such arrangement, serving to sustain S. N. PIPER. 

